# Replication Files for "Omitted Variables, Countervailing Effects, and the Possibility of Overadjustment"

by Kevin Clarke, Brenton Kenkel, and Miguel Rueda  
last updated 2016-07-19


## Files Included

### R scripts

	* `ckr_replication.R` - Produces as output tables 1, 2, and 3 from paper. Upon completion of the script, the sole contents of the workspace will be these 3 tables. Note that to run this file the user must set the working directory appropriately to the folder containing this script and all other files. The working directory can be adjusted on line 16. The list of required packages appears below. 


### Other files

  * `DWvsCPS.rda`: Dehejia-Wahba/CPS data, in R data format, taken from the
    now-defunct R package "rrp" (see
    <http://cran.r-project.org/src/contrib/Archive/rrp/>)

  * `jeeafile1.dta`: Data from McKenzie et al in Stata format, obtained from authors.

  * `README`: This file


## Requirements

  * R version 3.1.1 or later

  * R packages (with version used to generate the results in the paper):
      * "boot" (1.3.16)
      * "car" (2.1.2)
      * "foreign" (0.8.66)
      * "Formula" (1.2.1)
      * "gam" (1.12)
      * "ggm" (2.3)
      * "ggplot2" (1.0.1)
      * "Hmisc" (3.16.0)
      * "MASS" (7.3.40)
      * "Matching" (4.8.3.4)
      * "rbounds" (2.1)
      * "reshape" (0.8.5)
      * "stringr" (1.0.0)
      * "xtable" (1.7.4)


## Contact

All questions about the replication files should be directed to Brenton Kenkel
(<brenton.kenkel@gmail.com>).